David Karl Fennell, MD
Psychiatry Physician · Atascadero, CA
David Karl Fennell, MD is a psychiatry physician with a practice address in Atascadero, California, and NPI 1922050178, issued on May 16, 2006. Check the license (California G45333, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Karl Fennell
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G45333 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10333 EL Camino Real, Atascadero, CA 93423
- Phone
- (805) 468-2000
- Enumerated
- May 16, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (805) 466-6011
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 10333 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Karl Fennell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45333Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatry physician in 2024
39 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
David Karl Fennell among 8,673 psychiatry physician records in California
David Karl Fennell, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 psychiatry physician records list a practice address in Atascadero
They are 54 of the 992 NPPES records with a practice address in Atascadero, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Atascadero → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Joshua Deane, MDAtascadero, CA 934231225080468
- Elouisa Dizon, MDAtascadero, CA 934231093971418
- Michael Lisiak, MDAtascadero, CA 934231104878842
- Hadley Osran, MDAtascadero, CA 934231063464220
- Gabrielle Paladino, MDAtascadero, CA 934231457303299
- Matthew Steiner, M.D.Atascadero, CA 934231619066529
- Kimberly Bond, MDAtascadero, CA 934221457000119
- Kevin Brown, M.D.Atascadero, CA 934221245764695
Common questions
What is David Karl Fennell, MD's NPI number?
David Karl Fennell, MD's National Provider Identifier (NPI) is 1922050178, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Karl Fennell, MD located?
The NPPES record lists a practice address at 10333 EL Camino Real, Atascadero, CA, 93423. Phone: (805) 468-2000. Providers update this record themselves, so call before visiting.
How can I verify David Karl Fennell, MD's license?
NPPES lists California license number G45333, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Karl Fennell, MD prescribe under Medicare Part D?
In 2024, David Karl Fennell, MD had 39 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.